From: BitTwister@mouse-potato.com   
      
   On Sun, 26 Jan 2020 21:29:09 -0000 (UTC), Jack Fearnley wrote:   
   > I recently moved my active system to a SSD and I am very pleased with how   
   > fast it boots up and loads applications. I have two systems on the SSD;   
   > my active system Ubuntu 18.04.3 LTS, and a 19.10 experimental system.   
   >   
   > In the past couple of months I am having problems booting the system.   
   > At first it was intermittentl but is now a hard failure.   
   >   
   > The experimental system boots without problems. My active system seems to   
   > start booting normally and the thrashes between the normal screen (ubuntu   
   > with the moving dots below) and a black screen.  This goes on for ever if   
   > I let it.   
   >   
   > I can boot successfully by entering recovery mode and booting directly   
   > from there. It starts up with reams of screen text and then lets me log   
   > in normally. The reams of screen text also appear on normal shut down.   
      
   I can only guess the reams of text is the normal systemd output which   
   is normally disabled on your normal boot. I have mine set to always   
   showing systemd text so I can see any failures.   
      
   > Any suggestions for solving or, at least, diagnosing this problem?   
      
   Let us assume you do a normal boot that fails, then do a maintenance boot.   
   In a root terminal you will need to run "journalctl -b -1"   
   to scroll through the journal to see if you can see what happens.   
      
   FYI: In the past I launched something which caused loss of control.   
   I was able to get a logout. But upon next log in the problem was   
   caused by my account restarting previous app.   
      
   From that point forward I always disable Save/Restore Session in all my   
   user accounts.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)